.sr-only { position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip: rect(0,0,0,0); white-space: nowrap; border: 0; }
.interactive-chart { min-width: 0; }
.chart-series { display: flex; gap: 12px; flex-wrap: wrap; margin-bottom: 16px; }
.chart-series-button { display: inline-flex; align-items: center; gap: 9px; border: 1px solid #c7cbd0; padding: 11px 14px; background: #fff; color: #383b46; font-size: .875rem; cursor: pointer; }
.chart-series-button[aria-pressed="true"] { border-color: #383b46; font-weight: 600; }
.chart-series-button[aria-pressed="false"] { color: #747982; background: #f5f5f5; }
.chart-series-button:disabled { cursor: default; opacity: 1; }
.chart-swatch { display: inline-block; flex: 0 0 11px; height: 11px; border-radius: 50%; }
.live-line-chart { display: block; width: 100%; height: auto; overflow: visible; touch-action: pan-y; }
.chart-gridline { stroke: #e6e8eb; stroke-width: 1; }
.chart-selection-line { stroke: #9b9da4; stroke-width: 1; stroke-dasharray: 4 6; }
.chart-axis { font-size: 18px; fill: #656976; font-family: inherit; }
.chart-periods { display: flex; gap: 8px; margin: 5px 0 20px; }
.chart-period-button { min-width: 0; flex: 1; min-height: 44px; padding: 10px 7px; font-size: .875rem; background: #fff; border: 1px solid #e0e2e6; color: #383b46; cursor: pointer; }
.chart-period-button[aria-pressed="true"] { color: #000; border-color: #000; font-weight: 600; }
.chart-readout { padding: 20px; background: #f5f5f5; }
.chart-selected-period { font-size: .875rem; margin: 0 0 12px; color: #555b65; }
.chart-readout-values { display: flex; flex-wrap: wrap; gap: 20px 36px; }
.chart-readout-values strong { display: block; font-size: 2.3rem; font-weight: 600; line-height: 1.15; letter-spacing: -.04em; }
.chart-readout-values span { display: block; font-size: .875rem; margin-top: 7px; }
.chart-table { margin-top: 16px; font-size: .875rem; }
.chart-table summary { cursor: pointer; padding-block: 10px; }
.chart-table table { border-collapse: collapse; width: 100%; margin-top: 12px; font-variant-numeric: tabular-nums; }
.chart-table td, .chart-table th { border-bottom: 1px solid #e0e2e6; text-align: left; padding: 10px 8px; font-weight: 400; }
.chart-table thead th { font-weight: 600; }
.live-sources-layout { display: grid; grid-template-columns: minmax(0, .8fr) minmax(0, 1.2fr); align-items: center; gap: 30px; }
.live-donut-wrap { position: relative; min-width: 0; }
.live-donut { display: block; width: 100%; height: auto; }
.donut-segment { cursor: pointer; transition: opacity .18s; }
.donut-center { position: absolute; left: 25%; top: 50%; transform: translateY(-50%); width: 50%; text-align: center; pointer-events: none; }
.donut-center strong { display: block; font-size: clamp(1.6rem, 3vw, 2.6rem); line-height: 1.1; color: #000; letter-spacing: -.04em; }
.donut-center span { display: block; font-size: .875rem; margin-top: 9px; line-height: 1.4; }
.source-legend { display: flex; flex-direction: column; gap: 6px; min-width: 0; }
.source-button { display: grid; grid-template-columns: 11px 1fr auto; align-items: center; gap: 12px; text-align: left; width: 100%; border: 1px solid transparent; padding: 12px; background: #fff; color: #383b46; cursor: pointer; font-size: .9375rem; line-height: 1.4; }
.source-button[aria-pressed="true"] { border-color: #c7cbd0; background: #f5f5f5; }
.source-button strong { font-size: .9375rem; white-space: nowrap; }
.source-detail { padding: 20px; background: #f5f5f5; margin: 22px 0 0; font-size: 1rem; line-height: 1.6; min-height: 5.6em; }
.chart-method { font-size: .875rem; line-height: 1.6; color: #656976; margin: 20px 0 0; }
.chart-comparison-card { padding: 32px; border: 1px solid #e0e2e7; background: #fff; margin-bottom: 30px; }
.chart-comparison-card h3 { font-size: 1.6rem; line-height: 1.25; margin-bottom: 12px; }
@media (max-width: 767px) {
  .chart-axis { font-size: 28px; }
  .chart-comparison-card { padding: 24px 18px; }
  .chart-series { gap: 8px; }
  .chart-series-button { font-size: .875rem; padding: 10px; }
  .chart-readout { padding: 18px; }
  .chart-readout-values { gap: 20px; }
  .chart-readout-values strong { font-size: 2rem; }
  .live-sources-layout { grid-template-columns: 1fr; gap: 15px; }
  .live-donut-wrap { max-width: 310px; width: 100%; margin-inline: auto; }
  .donut-center strong { font-size: 2rem; }
  .source-button { padding: 12px 8px; }
  .chart-table { overflow-x: auto; }
}
@media print {
  .chart-series, .chart-periods, .chart-readout { display: none; }
  .chart-comparison-card { padding: 12pt; break-inside: avoid; }
  .chart-method, .source-button { font-size: 9pt; }
  .source-detail { min-height: 0; }
  .source-button { padding: 5pt; }
  .donut-segment { opacity: 1 !important; }
}
@media (prefers-reduced-motion: reduce) { .donut-segment { transition: none; } }